This image provided by Marvel Entertainment shows the cover of the first issue of "Uncanny Avengers." In comics, the first issue is where the story starts and the legend begins. Marvel Entertainment, home to the Fantastic Four, the X-Men and the Avengers, among others, is making more than 700 first issues available to digital readers starting Sunday, March 10, 2013, via its app and website. (AP Photo/Marvel Entertainment)

This image provided by Marvel Entertainment shows the cover of the first issue of "Civil War." In comics, the first issue is where the story starts and the legend begins. Marvel Entertainment, home to the Fantastic Four, the X-Men and the Avengers, among others, is making more than 700 first issues available to digital readers starting Sunday, March 10, 2013, via its app and website. (AP Photo/Marvel Entertainment)

This comic book image released by Marvel shows an illustration from"Age of Ultron," Book One. After years of well-placed warnings that have gone unheeded, the ever-adaptive artificial intelligence that is Ultron has come out on top, turning the planet into a dystopian landscape that is wrecked beyond compare with technology at the top of the food chain. (AP Photo/Marvel)

This comic book cover image released by Marvel shows "Age of Ultron," Book One. After years of well-placed warnings that have gone unheeded, the ever-adaptive artificial intelligence that is Ultron has come out on top, turning the planet into a dystopian landscape that is wrecked beyond compare with technology at the top of the food chain. (AP Photo/Marvel)

IMAGE DISTRIBUTED FOR PHONAK - Phonak hearing aid wearer Anthony Smith, 5, with poster, of Salem, NH, and kids from the Center for Hearing and Communication in New York City join Marvel's Iron Man, Tuesday, Feb. 26, 2013, to unveil a poster developed in partnership between Phonak and Marvel Custom Solutions that will be helpful in removing the stigma associated with children wearing hearing aids. (Photo by Diane Bondareff/Invision for Phonak)

IMAGE DISTRIBUTED FOR PHONAK - Phonak hearing aid wearer Anthony Smith, 5, of Salem, NH, greets Marvel's Iron Man, Tuesday, Feb. 26, 2013, in New York, during an event to announce a unique partnership between Phonak and Marvel Custom Solutions to produce an educational poster geared for children that highlights the benefits of hearing aids. (Photo by Diane Bondareff/Invision for Phonak/AP Images)

IMAGE DISTRIBUTED FOR PHONAK - Marvel's Iron Man helps unveil a poster developed in partnership between Phonak and Marvel Custom Solutions that is designed to promote hearing health in children and help remove the stigma associated with children wearing hearing aids, Tuesday, Feb. 26, 2013, in New York. (Photo by Diane Bondareff/Invision for Phonak)

IMAGE DISTRIBUTED FOR PHONAK - Phonak hearing aid wearer Anthony Smith, 5, of Salem, NH, shares a moment with Marvel's Iron Man, Tuesday, Feb. 26, 2013, in New York, during an event announcing a unique partnership between Phonak and Marvel Custom Solutions to produce an educational poster geared for children that highlights the benefits of hearing aids. (Photo by Diane Bondareff/Invision for Phonak/AP Images)

Plush dolls, based on Marvel Comic's characters and manufactured by Funko, are displayed at the American International Toy Fair, Monday, Feb. 11, 2013 in New York. (AP Photo/Mark Lennihan)

Toy demonstrator Clayton Hodges dons the Wolverine Hero Mask and Wolverine Electronic Claw, based on the Marvel Comics character featured in the upcoming film The Wolverine in Hasbros showroom at the American International Toy Fair, Saturday, Feb. 9, 2013, in New York. (Photo by Jason DeCrow/Invision for Hasbro/AP Images)

This undated publicity image released by Marvel shows Robert Downey Jr., as Tony Stark/Iron Man, in a scene from "Marvel's Iron Man 3." "Marvel's Iron Man 3" was one of several upcoming films to receive spotlight treatment with an ad that aired during Super Bowl XLVII on Sunday, Feb. 3, 2013. (AP Photo/Marvel, Zade Rosenthal)

This undated publicity image released by Marvel shows Robert Downey Jr., as Tony Stark/Iron Man, in a scene from "Marvel's Iron Man 3." "Marvel's Iron Man 3" was one of several upcoming films to receive spotlight treatment with an ad that aired during Super Bowl XLVII on Sunday, Feb. 3, 2013. (AP Photo/Marvel)

This undated photo provided by Marvel Comics shows the cover of the 700th and final issue in the comic book series The Amazing Spider-Man, issued Wednesday, Dec. 26, 2012. The series ends as Peter Parker meets his doom. But Spider Man's adventures will continue with the debut of Superior Spider-Man in January 2013. (AP Photo/Marvel Comics)

In this undated movie still provided by Twentieth Century Fox, the crime lord Kingpin, played by Michael Clarke Duncan, left, hires Bullseye, played by Colin Farrell, in a scene from the movie "Daredevil", based on a popular comic book published by Marvel. In Google's 12th annual roundup of global trending searches, "Michael Clarke Duncan" was ranked ninth. (AP Photo/20th Century Fox, Zade Rosenthal)

This comic book image released by Marvel Comics shows the cover of Avengers Arena. In the latest edition out Wednesday, Dec. 12, 2012, young heroes square off against each other on an island run by the villain Arcade. (AP Photo/Marvel Comics)

This image released by Starpix shows Marvel Comics scribe and film producer Stan Lee at a special signing, hosted by Choice Collectibles, a publisher of Marvel fine art, during New York Comic Con, Friday, Oct. 12, 2012 at Jacob K. Javits Convention Center in New York. The hand-signed artwork is available for sale during New York Comic Con and at MarvelFineArt.com. (AP Photo/Starpix, Dave Allocca)

This comic image released by Marvel Entertainment shows the cover of the upcoming "Captain America," part of Marvel Comics new initiative aimed at recharging the publishers heroes and villains. (AP Photo/Marvel Entertainment)

This comic image released by Marvel Entertainment shows the cover of the upcoming "Indestructible Hulk," part of Marvel Comics new initiative aimed at recharging the publishers heroes and villains. (AP Photo/Marvel Entertainment)

This comic image released by Marvel Entertainment shows the cover of the upcoming "Iron Man," part of Marvel Comics new initiative aimed at recharging the publishers heroes and villains. (AP Photo/Marvel Entertainment)

This comic book cover released by Marvel shows the "Avengers VS. X-Men #11" issue. Marvel Comics is killing off Charles Xavier, the founder of its famed X-Men, with his killer none other than Scott Summers who, as Cyclops, was one of the original five mutants whom Xavier taught to use his powers to help man- and mutant kind with mixed results. The death comes in "Avengers Vx. X-Men" No. 11, which was released Wednesday, Sept. 12. (AP Photo/Marvel Comics)

This comic book cover released by Marvel Comics shows super hero Captain America being sworn in as president of the United States in Issue 16 of "The Ultimates." The sentinel of liberty will move into the White House in the pages of The Ultimates, a series set in the Ultimate Comics universe where America is riven by factionalism, out-of-control anti-mutant hysteria and outright secession. Rogers will take the oath of office in issue No. 16, due out in October. (AP Photo/Marvel Comics)

This comic book image released by Marvel Comics shows the Marvel anti-hero Venom. Venom, long a nemesis of Spider-Man but most recently a sanctioned operative of the U.S. government, is pulling up stakes and looking for a fresh start, in Philadelphia of all places. Starting with issue No. 28, due out later this fall, the Marvel Comics character will protect the city of brotherly love from crime, malfeasance and, maybe, says writer Cullen Bunn and editor Tom Brennan, himself, too. (AP Photo/Marvel Comics)